Journal of Statistical Physics

, Volume 30, Issue 1, pp 195–217 | Cite as

Preliminaries to the ergodic theory of infinite-dimensional systems: A model of radiant cavity

  • Giulio Casati
  • Italo Guarneri
  • Fausto Valz-Gris
Articles

Abstract

We discuss a number of mathematical results that are relevant to the statistical mechanics of a model of radiant cavity in which the electromagnetic field interacts with a nonlinear charged oscillator. In particular, we show that energy equipartition in the sense of Jeans would exclude local exponential instability of orbits; it would also prevent the existence of significant finite invariant measures on a given energy surface. A phase space of infinite total energy is defined, and an invariant measure in it is built, for which different modes of the field are statistically independent.

Key words

Stochasticity infinite systems black body 

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Copyright information

© Plenum Publishing Corporation 1983

Authors and Affiliations

  • Giulio Casati
    • 1
  • Italo Guarneri
    • 2
  • Fausto Valz-Gris
    • 3
  1. 1.Istituto di Fisica dell'Universitá-Via Celoria16 MilanoItaly
  2. 2.Istituto di Matematica dell'UniversitáPaviaItaly
  3. 3.Istituto di Fisica dell'Universitá-Via Celoria16 MilanoItaly

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